gravity
grav-i-ty
noun
Extreme seriousness or importance of a situation, problem, or matter.
"Everyone understood the gravity of the crisis."
noun
The natural force that attracts any two objects with mass towards each other.
"The apple fell due to Earth's gravity."
Thesaurus
Synonyms: sombreness, somberness, soberness, graveness, sobriety, solemnity, gravitational attraction, gravitational force, gravitation
Antonyms: levity